Engineers are at the landslip and say it is going to take several days - at least to clear the landslip and re-open the line. A further assessment will be made tomorrow and Monday - at this point they have not said when the line will be clear.
Routes affected (in both directions):
Waterloo to Portsmouth via Eastleigh - these trains will be diverted and will not call at Botley or Hedge End. Journey times will be extended by at least 30 minutes.
Southampton to Portsmouth - these trains will run on their normal route but may be delayed because of congestion caused by the diverted trains.
More top news
The government is consulting on proposals to introduce an hourly fast train in parts of the south east - not stopping at some stations
Monday night's forecast for the west of the region
Monday night's forecast for the east of the region